Home / 12,908.59-19,360.75-4,142.36

Finding the Fourth Proportional to 12,908.59, 19,360.75 and 4,142.36

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Solution

The fourth proportional to 12,908.59, 19,360.75 and 4,142.36 is: 6,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.59 : 19,360.75 = 4,142.36 : x
  2. Step 2: Convert to fraction form
    12,908.59/19,360.75 = 4,142.36/x
  3. Step 3: Cross multiply
    12,908.59x = 19,360.75 × 4,142.36
  4. Step 4: Simplify right side
    12,908.59x = 80,199,175.66
  5. Step 5: Solve for x
    x = 80,199,175.66/12,908.59
  6. Step 6: Final answer
    x = 6,212.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.